1 Land contracts or contracts for deed are a security agreement between a seller, called a Vendor, and a buyer, called a Vendee.  The Vendor agrees to sell a property by financing the purchase for the Vendee.
The two DNA strands are held together by interchain hydrogen bonds. H-bonds pair the bases in one chain to the complementary bases in the other chain. (A/T and G/C).
In DNA, complementary strands are two strands of nucleotides that base pair by hydrogen bonds across the nitrogen basses of each nucleotide is such a way that A (adenine) alwaâ¦ys pairs with T (thymine) and G (guanine) always pairs with C (cytosine).